Starrett 54101 AISI 01 Tool Steel Flat Stock 5/16" x 5/16" x 18"

The Starrett 54101 is a precision-ground flat stock bar made from AISI 01 oil hardening tool steel, measuring 5/16" x 5/16" x 18". This high-quality tool steel is ideal for manufacturing precision tools, gauges, jigs, fixtures, and other applications requiring dimensional stability and wear resistance.

Key Features:

• AISI 01 oil hardening tool steel composition for superior hardness and edge retention
• Dimensionally stable material maintains tight tolerances during heat treatment
• Excellent for intricate work including thin sections with minimal cracking risk
• Precision-ground finish on all surfaces for accurate machining
• 5/16" x 5/16" square cross-section, 18" length
• Can be hardened to 60-64 HRC for maximum wear resistance

AISI 01 tool steel is a versatile, water or oil hardening steel that offers excellent machinability in the annealed condition and can be hardened to high levels for demanding applications. This flat stock is precision-manufactured to exacting Starrett standards for toolmakers, machinists, and manufacturers requiring consistent, reliable material properties.